Control & Communications

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and, therefore, apply to both sets. Examples are protective function enable settings and matrixed output contacts such as waveform buffers and blocking. All parameter set func- tions require a password.

6.11.1 Active Set

The active parameter set refers to the parameter set that is currently used by the ISGS relay—set A or set B. The Active Set parameter (7101) indicates which set is currently active on the LCD using the letter A or B.

Refer to Section 6.11.3 on how to make a parameter set the active set.

6.11.2 Default Set

The default set refers to factory default parameter settings. These are stored in read-only memory (ROM) and cannot be overwritten. The default set cannot become an active set in itself, it has to be copied to either set A or set B (7104 and 7105).

6.11.3 Switching Sets

A parameter set can be made active by selecting the desired set in the Activation parameter (7103). Switching between sets requires 4.5 seconds.

Note: Switching the parameter sets could cause a trip if the pickups are set lower than in the previous set. View the settings before acti- vating the new set.

2.Press Enter. The parameter set has switched to the alternate set. The LCD displays the same address and function as before the switch, but the address prefix has changed to the letter representing the displayed param- eter set. The alternate parameter may or may not con- tain a value depending on whether the alternate parameter had been configured before.

B1502 Pickup 50

If the parameter was not configurable to an alternate set (had no prefix), the display will not have changed.

Note: Switching the parameter sets for viewing and configuration does not make the alter- nate set active.

For detailed descriptions on how to display, configure, save, and switch parameters, and when to use a password, refer to the standard operating procedures in Section 3.5.

Exceptions to the switching of sets are binary inputs, binary outputs, and the trip contacts in the 6000 address blocks. For these parameter settings, the relay retains these values regardless of the parameter set. For example, if the output contact is set while set A is active, switching to set B will not change the output contact setting.

 

6.11.4 Copying Sets

Switching between parameter sets for viewing and configur-

Parameter settings for set A can be copied to set B and vice

ing parameter settings is possible regardless of address or

versa (7106 and 7107). Factory default settings can also be

address level currently displayed by the LCD, or whether the

copied to either set A or set B (7104 and 7105), but no

parameter can be configured to an alternate setting.

parameter set can override the default settings.

 

A1502 Pickup 50

110A

1.At any address, press the F key

A1502FPickup 50

110 A

followed by either 1 (set A) or 2 (set B).

The LCD displays the following message:

PARAMETER SET

COPIED TO EDIT

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Siemens Energy & Automation, Inc.

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Siemens SG8158-00 manual Active Set, Default Set, Switching Sets, B1502 Pickup, Copying Sets, A1502 Pickup 110 a